Improvement in shuttles for sewing-machines



T. COLSTON.

Sewing-Machine Shuttle. No. 112,125. Paten ted Feb. 28, 1871.

N.PETERS. PHOTOL1'IHOGRAPHER, WASHINGTON. D. C.

UNITED STATES PATENT O FICE.

THEODORE COLSTON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO HIM- SELF ANDCHARLES E. BILLINGS, OF SAME PLACE.

IMPROVEMENT IN SHUTTLES FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 112,125, dated February28, 1871.

To all whom it may concern:

Be it known that I, THEODORE OoLs'roN, of Hartford, in the county ofHartford and State of Connecticut, have invented a new and usefulImprovement in Sewing-Machine Shuttles; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, whereby aperson skilled in the art can make and use the same, relerence being hadto the accompanying drawings, and to the letters of reference markedthereon.

Like letters in the figures indicate the same parts.

My invention consists in a new method of holding and fastening thebobbin into the shuttle of a sewing-machine, and which shall allowo'fits being removed and replaced with facility.

It has for its object a simpler and cheaper manner of arranging thesocket and spring at one end ofthe shuttle than has heretofore beenused.

1n the drawings, Figure 1 is a view of the open side of the shuttle,which passes next to the needle, and shows the bobbin in its place inthe interior. Fig. 2 is a horizontal section through the middle of theshuttle, and shows the construction of the interior parts.

a is the body of the shuttle, which carries the bobbin. bis the bobbinfor holdinglhe thread which is wound upon it. This bobbin is removedfrom the shuttle to wind the thread and replace it for use. Tofacilitate this one end of the spindle of the bobbin rests in a slidingsocket, c, which is held in its place against the end of the spindle bymeans of the rubber spring (I. The sliding socket c has uponitsinner endatlat head, which is pressed upon by the rubber, and which likewiseserves to keep the socket in place when the bobbin is removed by restingagainst the shell or wall of the shuttle between the rubber spring andthe open bobbin-chamber. The rubber spring d has one side flattened toreceive the head of the socket c. A hole, e e, is bored from the outsideofthe shuttle for the reception of the rubber spring d. The slidingsocket c is inserted through the hole 0 and thespring d placed inposition back of it, filling the hole, and all the parts are held inplace withoutany of the screw-holdings and tapped holes required whenthe spring is inserted from the inside of the shuttle.

The operation of myinvention is as follows: When it is desired to removethe bobbin it is pressed against the socket c, which allows the otherend of thespindle to escape from its 'socket, so that it can be liftedout. \Vhen it is desired to replace the bobbin one end is inserted inthe socket c and pressed against the spring until the other endcan enterits socket, when the spring forces it into place.

What I claim as my invention is- 1. The spring of rubber or otherelastic material inserted from the outside of the shuttle through a holeat right angles to the axis of the bobbin for the purpose of pressingthe sliding socketc against the end of the bobbinspindle, substantiallyas described.

2. The herein-described arrangement of the devices 0 and d within theshuttle, whereby they can be placed in position from the outside throughan aperture, which does not require to be closed up to prevent thespring from escapin g.

THEODORE OOLSTON.

Witnesses:

Tnno. G. ELLIs, GEO. W. ARQHIBALD.

